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公开(公告)号：US2643588A
公开(公告)日：1953-06-30
申请号：US11854549
申请日：1949-09-29
Applicant: ST REGIS PAPER CO
Inventor： BURROUGHS EDWIN E
IPC: B31B19/84
CPC classification number: B31B70/00 , B31B70/85 , B31B2160/10
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